Bookbinding method and means



Nov. 6, 1956 H. KALMBACHER E L 2,769,414

BOOKBINDING METHOD AND MEANS 4 Sheets-Sheet 1 Filed Oct. 5, 1955 ADHESIVE ADHESIVE INVENTORF Hugc'; ha/mlmcher; y H8103 ha/mbacher ATTORNE Y5 Nov. 6, 1956 H. KALMBACHER ET L 2,769,414

BOOKBINDING METHOD AND MEANS 4 Sheets-Sheet 2 Filed Oct.

INVENTOR. -Hugo Ka/mbac/zerg Mdkkbth n Ka/mbacher Nov. 6, 1956 H. KALMBACHER ET AL 2,

BOOKBINDING METHOD AND MEANS 4 Sheets-Sheet 5 Filed OCT,- 5, 1955 INVENTOR. Hugo Ka/mbac/nr BY He/ n ha/mbacher A rroRNE Y5 1956 H. KALMBACHER ET AL 2,769,414

BOOKBINDING METHOD AND MEANS Sheets-Sheet Filed 001,. 5, 1955 :SHUTTLE INVENTOR. Hugo Ka/mbacher He/n Ka/mbache A rramvs y;

U ited St e Pat BOOKBINDING METHOD AND MEANS Hugo Kalmbacher, Toledo, and Heinz Kalmbacher, Maumee, Ohio Application October 5, 1955, Serial No. 538,655 3 Claims. Cl'. 112-21 This invention relates to the rebinding of books and particularly to improvements ina manner of securing the successive leaf sections together whereby a' gluing is effected between successive sections during the sewing operation.

The primary object of the' invention is' to so treat the shuttle threads of a book rebinding machine with adhesive that in the sewing and binding operation the successive book sections are firmly glued together along their binding edge portions, thus accomplishing an operation that is now tediously performed by hand;

Other objects and advantages of the invention will be apparent from the following description, and from the accompanying drawings illustrating one embodiment thereof, and in which- Fig. 1 is a front fragmentary elevation of a bookbinding machine embodying the invention;

Fig. 2 is an enlarged perspective view of the adhesive receptacle with its support, and showing the feeding therethrough of the shuttle thread;

Fig. 3 is an enlarged fragmentary detail of the adhesive receptacle with the shuttle thread passing through one side thereof;

Fig. 4 is a detail of the shuttle guide bar and shuttles and of a set of needles and their carrying bar, with the needles projected and the shuttles retracted, and with the shuttle threads and needle threads respectively engaged therewith preparatory to the shuttles being projected through registering loops in the needle threads;

Fig. 5 is an enlarged fragmentary section on the line 55 in Fig. 4;

Fig. 6 is a fragmentary view on the line 66 in Fig. 5;

Fig. 7 is a view similar to Fig. 4, with the shuttles and engaged thread loops at the limits of their inward strokes;

Fig. 8 is an enlarged section on the line 88 in Fig. 7;

Fig. 9 is a view similar to Fig. 6, with one shuttle bar and its thread projected through a series of registering needle loops;

Fig. 10 is a view similar to Fig. 9, with the shuttle partly withdrawn;

Fig. 11 is a view similar to Fig. 10, With the shuttle entirely withdrawn and the shuttle thread shifted laterally into central relation to the withdrawn needles;

Fig. 12 is an enlarged section on the line 1212 in Fig. 11, and

Fig. 13 is an enlarged fragmentary section like Fig. 12, with the engaged shuttle and needle thread loops pressed to the top of the book section.

The features comprising the invention are shown, in the present instance, in connection with a bookbinding machine marketed by the Oversewing Machine Company, of Los Angeles, California, and only those parts of the machine are shown that are necessary for an understanding of the invention and its operation.

The invention consists in passing the shuttle thread through a liquid adhesive so as to saturate it with the adhesive before being fed by the shuttle or shuttles through the registering needle thread loops. After this the neeice dl'es are withdrawn and" the interengaged needle thread and shuttle thread loops are then pressed to the :top surface of the top back section to exude the adhesive from the shuttle thread over said top surface and onto the terengaged portions of the needle threads. This causes the threads to adhere to each other and to the book sec tions and also causes the nextbook section when pressed to the immediately subjacent book section to be firmly glued together. This prevents or materially lessens the liability of the binding breaking between two adjoining sections as so frequently occurs. So far as l am aware, with the binding methods now employed it is required that the operator apply a thin line of adhesive to the top of the sewed section prior to placing the unsewn pages of the next section into the machine; Such a hand' operation is diflicult and time consuming.

In the customary operation of the machine, the book sections to be bound together are successively placed one on another on a bed 10 having a row of vertical openings 11 therein in which the needles 12 reciprocate. The needles project from a part 13 that is movable toward and away from the bed 10 and which when moved toward the bed causes the needles to pierce and p ass a distance through the top book section, here designated A. Each needle has a thread a threaded through an eye in its piercing end so that the thread. is pushed in loop form through the perforation provided in the book section by the piercing action of the needle. Each thread loop is carried a distance beyond the perforation by its needle, after which the needles are withdrawn a short distance to form a loop b in each thread beyond the pierced book section and at a side of the needle, as shown in Fig. 5. For this purpose, the portion of the thread at the loop side of the needle is loose, while' that at the other side of the needle is under a tension sufiicient to take up slack. A loop I) having thus been formed at the same side of each of the needles, with their open sides facing each othena pair of shuttles 15, one at each end of the row of needles 12, are moved inward, each through one-half of the registering loops b and each carrying forward through said loops b a cross loop 0 in a respective shuttle thread d. When the shuttles have completed their inward strokes a member 16 carrying two spaced anchor pins 17 moves downward and causes the pins to enter the loops 0, one in each loop, at its closed end and at a side of the respective shuttle, as shown in Fig. 7. The shuttles then retract leaving the loops c within the needle loops b preparatory to being positioned on the top surface of the book section, as indicated in Fig. 12, and pressed thereagainst by a pressure foot 18, as indicated in Figs. 12 and 13, or by the positioning and pressing down of the next book section thereover.

Each shuttle thread a feeds from a ball or other source of supply located in a thread box 20 at the respective side of the machine, passes upward therefrom over or through a guide 21, thence inward to and over a guide 22 whence the thread passes downward through a liquid adhesive in a glue pot or receptacle 23. The thread then passes through an aperture in the adjacent side of the receptacle, which aperture is formed partly by felt 24 within the receptacle. The thread in its passage through the receptacle becomes saturated with the adhesive, and this is partially wiped from the thread by the felt 24. Each saturated thread, after leaving the receptacle 23, passes outward and downward to a point where it is engaged by the respective shuttle and forced in the form of a loop 0 through needle loops b with which it is to coact in the binding operation. Upon the withdrawal of the needles and pressing of the interengaged shuttles and thread loops to the top binding section A, the adhesive in the shuttle thread is squeezed therefrom and spread over the adjacent portions of the needle threads and of the top surbe thoroughly saturated with the adhesive it is desirable to pass it a distance down in the glue pot 23 below the outlet aperture in the felt 24around a guide hook 25 and then up to said outlet, as shown in Figs, 2 and 3. v

As the customary binding operation continues-for successive book sections, each top section, when pressed to "the section next-below, is firmly glued thereto throughout the length of the bound edge by the adhesive that is contained ,in the shuttlethread and byrthat which is forced from the thread and spread over the adjacent surface by the pressing together of the bound edge portions of the successive book sections. I V

It is apparent that with our method of bookbinding, two threads saturated with a liquid adhesive are placed between each adjoining pair 'of book sections lengthwise of the bound edge and preferably at opposite sides of the stitching row. This causes an adhesive to be applied to the opposing surfaces of said sections in uniformly spreadout form, whereby to materiallyjstrengthen the binding together of the sections and lessening to a minimum the liability of the sections breaking apart at their bound edges, as so frequently occurs with the binding methods now employed. a

We vwish it understood that the invention is capable of numerous modifications and changes and of being practicedin many ways without departing fromthe spirit of the claims.

' What we claim is: v b v a 1. In a method of binding book sections together one on top of another wherein a plurality of needle thread loops are forced through each section in a row adjacent to its binding edge and before placing another section thereon, projecting a cross thread loop transversely through said first loops at the top side of the section and pressing the interengaged loop threads against the top surface of such section, the improvement which consists in saturating said cross thread with aliquid adhesivebefore projecting it through said needle thread loops whereby the pressing of the loops to the section squeezes adhesive from the cross loop thread and spreads it over the adjacent section surface to, securely cement thereto the next superposed book sectionwhen placed thereon;

2. In a bookbinding machine in which successive book 7 sections are bound together and in which a' plurality of needle thread loops are forced in a rowthrough each book section when placed in position in the machine and each of such thread loops is provided with a side loop adjacent to the outer end of its needle, and a shuttle thread loop is fed transversely'through said side loops and pressed therewith against the book'section being bound, the improvement comprising the provision of means for saturating the shuttle thread with an adhesive before engagement by the shuttle and squeezing some, at least, of the adhesive from the shuttle thread over the adjacent surface of the needle thread and book section by said pressing operation, whereby the next book section when placed on and pressed to the preceding section is cemented thereto along and adjacent to the binding edge.

3. In a bookbinding machine in which successive book sections are bound together and in which a plurality of needle thread loops are forced. in a row through each book-section when placed in position in the machine and- 7 each of such thread loops is provided with a side loop adjacent to the outer end of its needle, and a shuttle,

thread loop is fed transversely throughsaid side loops and pressed therewith against the book section being bound, the improvement whichcoinprises providing a receptacle containing a liquid adhesive, directing the shuttle thread through said receptacle to be saturated with the adhesive 7 before engagement with the shuttle, whereby the adhesive which placed.

is partially squeezed from the shuttle thread over the adjacent surfaces of theneedle threads andbook section by pressing the next book sectionto the book sectiqn on References Cited the file of this patent V STATES PATENTS 460,582 I Kahnes' Oct; 6, 1891 2,024,959 Alger Dec. 17, 1935 FOREIGNI PATENTS 638,809

Great Britain July 12,1948 

